al occurs at the expense of continuous building of new SFU in substitution of the destroyed ones. This process of renewal of destroyed SFU also represents structural regeneration as such - a purposeful metabolism. Therefore, metabolism of living organisms is an active way of protection of systems from destructive effect of negative entropy (from degeneration). In mineral nature metabolism may take place as well, but it essentially differs from metabolism of any living systems. Crystals grow from the oversaturated saline solution, the atmosphere exchanges water and gases with the seas, automobile and other internal combustion engines consume fuel and oxygen and discharge carbon dioxide. But if a crystal is taken out from saline solution, it will just collapse and will not undertake any measures on conservation of its structure. When a camshaft in the automobile engine is worn out the car does nothing to replace it. Instead, it is done by man. Any actions of the system directed towards the replacement of destroyed and lost SFU represent self-organization anyway, which in the living nature is called structural self-reorganization or metabolism. In mineral nature structural self-reorganization is nonexistent. Any living system, regardless of its complexity, would undertake certain actions for the conservation of its structure. At that, there are always two flows of substances in living systems - flow of energy and "Structural"/constructive/flow. The energy flow is intended to provide energy for any actions of systems, including structural self-reorganization, as it is necessary every time to build new connections/bonds which require energy (Regeneration). "Structural" flow of substances is only used for structural regeneration, i.e. replacement of worn out SFU for the new ones (in this case we do not examine the system's growth, i.e. generation). When we talk about self-reorganization we mean "structural" flow of substances, although such flow is impossible without energy. Myocardium in humans completely renews (regenerates) its molecular structure approximately within a month. It means that its myocardiocytes, or rather their elements (Myofibrillas, sarcomeres, organelles, membranes, etc.) Are continually being worn out and collapse, but are continually built again at the same speed. Outwardly we can see one and the same myocardial cell, but eventually its molecular composition is being completely renewed. Throughout the human lifespan the type of organization varies. In the early years of life organization occurs at the expense of inclusion of new additional elements in the structure (generation, the organism grows and develops), whereas starting from the mid-life period degeneration predominantly takes place, ie destruction process (disintegration of the previously existing more complex system). But these are now the particulars associated with imperfection of real living systems. For any system the overall objective is to ...